CVE-2021-37721

Name: CVE-2021-37721
Creator: NVD / NIST
Published: 2021-09-07T13:15:07.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 2.96%

Last modified Jun 17, 2026

CVE-2021-37721 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A remote arbitrary command execution vulnerability was discovered in Aruba SD-WAN Software and Gateways; Aruba Operating System Software version(s): Prior to 8.6.0.4-2.2.0.4; Prior to 8.7.1.4, 8.6.0.9, 8.5.0.13, 8.3.0.16, 6.5.4.20, 6.4.4.25. Aruba has released patches for Aruba SD-WAN Software and Gateways and ArubaOS that address this security vulnerability.. EPSS estimates a 2.96% chance of exploitation in the next 30 days.

Description

A remote arbitrary command execution vulnerability was discovered in Aruba SD-WAN Software and Gateways; Aruba Operating System Software version(s): Prior to 8.6.0.4-2.2.0.4; Prior to 8.7.1.4, 8.6.0.9, 8.5.0.13, 8.3.0.16, 6.5.4.20, 6.4.4.25. Aruba has released patches for Aruba SD-WAN Software and Gateways and ArubaOS that address this security vulnerability.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.96%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Arubanetworks	Sd-Wan	>= 2.2.0.0, < 2.2.0.4
Arubanetworks	Arubaos	>= 6.4.4.0, < 6.4.4.25
Arubanetworks	Arubaos	>= 6.5.4.0, < 6.5.4.20
Arubanetworks	Arubaos	>= 8.3.0.0, < 8.3.0.16
Arubanetworks	Arubaos	>= 8.5.0.0, < 8.5.0.13
Arubanetworks	Arubaos	>= 8.6.0.0, < 8.6.0.9
Arubanetworks	Arubaos	>= 8.7.0.0, < 8.7.1.4
Siemens	Scalance W1750d Firmware	All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-280624.pdfMitigation, Third Party Advisory
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-016.txtVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-280624.pdfMitigation, Third Party Advisory
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-016.txtVendor Advisory

Timeline

Published: Sep 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37721?

How severe is CVE-2021-37721?

CVE-2021-37721 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST